Operating Mode On Standard Operation/ Limit Switch Allocation; Overload Protection; Safety Position - GF EA 11 Manual Instrucciones

Design and function

6.5 Operating mode on standard operation/ limit switch allocation

The actuator moves from the "Closed" position to the "Open" position by applying live
voltage to the nominally open "S1" terminal. By applying live voltage to the normally
closed "S2" terminal, the actuator will move from the "Open" position to the "Closed"
position. Remember only to apply live voltage to one terminal at a time. The final
positions are defined by the two limit switches S1 and S2.
Switching cam that is set to limit
1
switch S1, position "Open"

6.5.1 Overload protection

The supply unit of the EA21/31/42 has an overload protection that protects the direct
current motor and the supply board from overheating. The overload protection is
activated as soon as the load exceeds the torque range. The actuator continues to run
as soon as the load is within the torque range and the temperature has gone down.

6.5.2 Safety position

In case of power failure, the actuator stays in its current position. If the actuator is
fitted with the accessory "fail-safe return unit", it can automatically return to a safety
position after a power failure.
46
Electrical actuators type EA 11/ 21/ 31/ 42
2
1
Switching cam that is set to limit
2
switch S2, position "Closed"